diff --git a/libavcodec/h264_sei.c b/libavcodec/h264_sei.c
index de0b19a6732cf4fa9561384cbdce549b23082285..850060875d44297b6cd93d8351a1e9f94324bf12 100644
--- a/libavcodec/h264_sei.c
+++ b/libavcodec/h264_sei.c
@@ -109,7 +109,7 @@ static int decode_unregistered_user_data(H264Context *h, int size){
 
     user_data[i]= 0;
     e= sscanf(user_data+16, "x264 - core %d"/*%s - H.264/MPEG-4 AVC codec - Copyleft 2005 - http://www.videolan.org/x264.html*/, &build);
-    if(e==1 && build>=0)
+    if(e==1 && build>0)
         h->x264_build= build;
 
     if(s->avctx->debug & FF_DEBUG_BUGS)